brooks' arrest came as a surprise. but this was a shock. >> this afternoon i informed the palace, the secretary, and the mayor of my intention to resign as commissioner of public service. >> reporter: the head of london's police force resigned, not because police personally suspected him of wrongdoing, but it was on his watch that the former "news of the world," editor neal wallis, was hired as a consultant to the police and arrested in connection with it. when this exploded two weeks ago, nobody dreamed how many powerful people will be dragged in and down. in the u.s., les hinton resigned on friday. he may face questions about what he knew as a top murdoch executive in britain in 2007. then there are the murdochs themselves-- rupert, the tycoon head of news throughout the world's largest media conglomerate after disney; and his son and heir apparent, james, who is now known to authorize payments to victims of phone hacking, although he says he didn't have the complete picture at the time, and regrets what he did. >> h